linux-kernel - Re: [PATCH] xen blkfront: Delay wait for block devices until after the disk is added.

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Date:	Thu, 20 Mar 2008 21:17:26 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Mark McLoughlin <markmc@...hat.com>
CC:	linux-kernel@...r.kernel.org,
	Christian Limpach <Christian.Limpach@...source.com>
Subject: Re: [PATCH] xen blkfront: Delay wait for block devices until after
 the disk is added.

Mark McLoughlin wrote:
> From: Christian Limpach <Christian.Limpach@...source.com>
>
> When the xen block frontend driver is built as a module the module load
> is only synchronous up to the point where the frontend and the backend
> become connected rather than when the disk is added.
>
> This means that there can be a race on boot between loading the module and
> loading the dm-* modules and doing the scan for LVM physical volumes (all
> in the initrd). In the failure case the disk is not present until after the
> scan for physical volumes is complete.
>   

Thanks, I've queued this.

    J
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